Silo-door frame.



Patented Dec. 11, 1917.

M w m m WITNESSES.- i/ 2% A TTORNEYS MATTHEW LKING, or BRADLEY;ILLnvoIs.

SILO-DOOR rnAME.

Specification of Letters Patent.

Application filed January 21-, 1915. Serial No. 3,637.

To all whom it may concern: I

Be it known that I, MATTHEWL. KING,

a citizen of the United Statearesiding at Bradley, in the county. ofKankakee and State of Illinois, have invented a certain new and usefulSilo-Door Frame, of which the following is a specification.

The object of my invention is to provide a silo-door frame structure ofsimple, durable and. inexpensive construction, so constructed andarranged that the door will accurately fit the door opening and providedwith a-smooth, firm edge for the door frame to fit against.

More particularly, it is my object to provide a cement door frameforming a. continuous door opening in a silo, which frame is providedwitha metaljamb having parts embedded in the masonry and designed to besecured to reinforcing rods or wires in the silo wall, the cementportion of the door being soshapedand arranged as to be applicable tosilo walls of any thickness by slight modifications.

A further object 1s to provide in such a device a' double connectingbar, securing together V the upright reinforcing means on each side ofthe door frame and provided witha spre ader-;between the connecting barswhereby any considerable. longitudinal expansion of the bars isprevented, said bars being designed to permit considerabl e: expansionof the silo wall but to prevent contraction thereof with relation to thedoor opening. v

My invention consists the construction, combination and arrangement-ofthe various parts of the device, whereby the objects con templated areattained, as hereinafter more fully set forth, pointed out in myclaimsand illustrated in the accompanying drawings, in which-- I r Figure 1shows a front elevation of a part of a silo showing the door jamborframeembodying my invention with, parts of the door framecut away. I

Fig. 2,-shows a horizontal, sectional view through the silo door frameand the 'door.

Fig. 3 shows a front elevation of the double connecting rod.

Fig. 4 shows a vertical, transverse sectional View taken on the line 44of Fig. 1 and Fig. 5 shows a side elevation of the metal face of thedoor jamb showing the manner in which the thereto.

reinforcing wires are secured Patented Dec.11, 1917.

In the accompanying drawings, I have I used the reference numeral 1O toindicate generally the wall of a silo. The silo wall 10, is providedwith a; verticalcontinuous dooropening,v At each sideof the opening H isa Jamb -of peculiar construction, which forms part of my invention.Thisjamb is preferably made by means. of molds madeaccording to mycopending' application for.

patent on forms for. masonry structures, Serial No. 744,576, filed on 27day .of Jane;

uary, 1913. g I The jamb comprises aframe'or'jamb forming an extensionofthesilo wall 10.

I l member 11, preferably made of cement and) Thecement jamb member. llis preferably provided with a vertical air space 12, ex: tendingapproximately fromthe upper to of the= jamb.member 11 are beveled from 5the lowerendthereof. The adjacent faces the outside of the silo wallinwardly and away from eachothen as shown in Fig. 2. In each side of thej'amb, I mount a T iron 14 with thetop of the iron resting againstthelbeveled portion of the jam b andwith the shankfofi the T extendinginto the masonry portion 11 of the jamb. ,The T iron is provided with aplurality of; open: ings 13 in the shank. To the. openings- 13 aresecured reinforcing rods or wires 15. In the outer surface of themasonryor cement portion 11 is cut opposite vertical 1 notches 16 extendingfrom thetop tothebottom of the jamb. The tendencyof the reinforcing 4rods 15, as will be seen fromthe drawings,

is todraw the shank of the T iron 14L to po sition substantiallyparallel to said reinforcing rods, ,To counteract this tendency,

I provideia connecting rod 17 having hook members 18 at eachenddesignedto extend over and engagetheshankof the T. iron 7 and to lie-embedded inthe -mas.onry v11, as' L shown in Fig. '2. 'Over its central portion,the rod 17 is-divided into two parts, 17 and 17 spaced apartf,ron1-.;each other, and in. the middle of the portions'17 and 17 Iprovide a spreader bar 19*. The ;bar 17 serves several purposes. Itcounteracts the tendency of the reinforcing rods 15 to pull the T ironsaway from'their proper position, and also holds the T irons at a properdistance from' each other, whenever the walls of the silo contract. Onaccount of door sections 19 having beveled side edges to fit the facesof said T irons. On the outer side of each door sectlon are a pluralityof sliding catch members 20 designed to slide laterally and enter thenotch or groove 16 when the door sections are placedin position and tobe held by the T-irons.

The advantages of my improved silo door construction are numerous.- Bymaking the portion 11 of cement or other similar material, it can bemadeof any desired width and thickness so that it may be readily used inconnection with silo walls of any thickness. By the use of the T irons14 or similar devices, I am able to provide a perfectly smooth bevelededge door jamb to receive the door sections 19. By means of theconnecting rod 17, I hold the T irons let against spreading to adistance farther apart than the width of the door section 19. The doorsections 19 are therefore always wide enough to fit'the door.

()nthe other hand, should the silo wall expand, the resiliency oftheportion's 17' and 17 is such as to permit them to bend and suchexpansion may take place without any breaks or cracks in parts of thesilo.

The reinforcing rods 15 and the rod 17 counteract the effect ofeach-other so that there is no undue strain on the T irons 1 1.

On account of the smooth metal surface of the T irons and the means forholding the T irons in proper position, I am always able to get a tightjoint between the door sections 19 and the sides of they door jamb.

I claim as my invention:

1. In a silo, having a door opening, jamb members of plastic material atthe sides of said opening having beveled faces, to permit the door to bereceived in said opening with its inner surface substantially flush withthe inner surface of the silo wall, and so that pressure from withinwill'force' the door toward said faces, upright T-irons each Copies ofthis patent may be obtained for five cents each, by addressing theWashington, I). C.

naaaevo having a flange forming a beveled face protecting one of saidfirst beveled faces, braces extended across the door openlngsubstantially flush with the outer part of the opensaid opening havingbeveled faces, to permit the door to be received in said 0 enin with itsinner surface substantially flush with the inner surface of the siloWall, and so that pressure from within-will force the door toward saidfaces, upright T-irons each having a flange forming a beveled face toprotect one of said first beveled faces, braces extended across the dooropening substantially flush with the outer part of the'opening, havingportidns embedded in said jamb members, and secured to said embeddedflanges of the T-irons, said plastic material Jambs having verticalnotches at their outer edges to receive locking bolts or the like, andfor permittmg said bolts to engage said T-irons, and a door havingbeveled side edges, said door being provided on its forward surface withsliding locking bolts f0 entering said notches.

3. In a devlce of the class described, the combination of aS1lO,l12LV1Dg walls provided .vith a door oaenin 'ambs of lasticmaterial arranged at the sides of said openings provided with beveledfaces, T-irons ar ranged with their central flanges projecting into saidplastic material jambs, .each having a flange resting agalnst andprotecting one of said first named beveled faces, braces extendingacross said opening substantially" flush with the outer portion of saidopening having their ends projecting into said ambs, a groove receivingthe edges of said central flanges, and reinforcing means secured to saidcentral flanges and extending into said walls.

Des Moines, Iowa, December 5, 1912.

MATTHEW L. KING.

Commissioner of Patents;

